>>3922103Idk it just pops into my mind I guess
Also I don't think I associate each letter/number with a certain color but rather on a cool/warm color basis. Like for example 4 makes me think of warm colors (red, orange, yellow) while 3 makes me think of cool colors (blue, green, purple). Though some numbers are definitely a certain color, like 5 is yellow and 8 is purple
I don't know how I came up with these colors but that's just how I perceive them I guess